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发帖数: 18 | 1 为什么理论预测graphene spin diffusion length 可达到100 um,但实际测量还不到
10um, 室温只有1-2 um 在single layer graphene. 另外：Spin life time is 50-
200ps, the order of magnitude shorter than expected from the intrinsic spin-
orbit coupling(-us).The results indicates that the presence of the extrinsic
spin relaxation mechanism.
请前辈指点。
why graphene for spintronics?
1. Extraordinary high mobility
>200000cm2v-1s-1 (suspended , low temperature)
>40000cm2v-1s-1 (on sio2 , room temperature)
-------Future high-speed transistor materials
2.only light atoms (carbon)-----small spin-orbit interaction
long spin relaxation time
high mobility ----long spin coherent length
----------------Future spintronics devices |
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